diff --git a/CHANGES.markdown b/CHANGES.markdown
--- a/CHANGES.markdown
+++ b/CHANGES.markdown
@@ -1,3 +1,8 @@
+0.4.2.3 (21 April 2016)
+-----------------------
+
+  - Mark `Control.Monad.Random` as `Trustworthy`.
+
 0.4.2.2 (18 January 2016)
 -------------------------
 
diff --git a/Control/Monad/Random.hs b/Control/Monad/Random.hs
--- a/Control/Monad/Random.hs
+++ b/Control/Monad/Random.hs
@@ -2,6 +2,7 @@
 {-# LANGUAGE FlexibleInstances          #-}
 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE MultiParamTypeClasses      #-}
+{-# LANGUAGE Trustworthy                #-}
 {-# LANGUAGE UndecidableInstances       #-}
 {-# OPTIONS -fno-warn-orphans #-}
 
diff --git a/MonadRandom.cabal b/MonadRandom.cabal
--- a/MonadRandom.cabal
+++ b/MonadRandom.cabal
@@ -1,5 +1,5 @@
 name:                MonadRandom
-version:             0.4.2.2
+version:             0.4.2.3
 synopsis:            Random-number generation monad.
 description:         Support for computations which consume random values.
 license:             OtherLicense